It's a great pity that you only stay for two days in Beijing that you cannot enjoy every tourist attractions. But you can still visit the attractions of the most representative. Firstly, I suggest you going to the Great Wall, which is the longest wall and one of the eight wonders of the world. It was built by hands only, which seems unimaginable. On the second day, you can visit to the Imperial Palace where you can learn more about Chinese history. It was built in 1406 and there were 24 emperors living in there. And then you can go to Summer Palace or Beihai Park.